Technician Using IPC Tester Device for CCTV Cable and Connection Diagnostics - 4K 影片檔

Close-up of a technician using an IPC tester to check BNC connectors and network cables during a security camera installation or maintenance task. The professional is wearing gloves and holding multiple coaxial connectors, with visible cabling and a power supply unit in the background. The image represents modern surveillance system setup, network diagnostics, and technical maintenance work in the field of security systems and electronics.